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r; <br /> Transit Mix Concrete Co. <br /> 167) Comment: The text states that the wells to the west and to the north of the proposed <br /> quarry are completed in the same material as the proposed quarry(granodiorite), which <br /> makes groundwater impact to these wells more feasible. The applicant then goes on to <br /> state that impacts will not occur to these wells. Please describe what impacts, if any, <br /> could potentially occur to these wells,and how the applicant will work to minimize <br /> impact. <br /> Response: These wells are completed in the same geologic material(granite) as the <br /> mine,which makes impacts to these wells more feasible than wells east of the fault. <br /> However,since the evidence indicates that ground water will not be intercepted by <br /> the mine,there should be no impacts to the ground water system or the neighboring <br /> wells. Bishop-Brogden Associates includes a discussion of these wells in their <br /> response to comments memorandum included in Exhibit G. <br /> 168) Comment: The text indicates that there is a consistent water table present in the hard <br /> rock granodiorite controlled by the elevation of Little Turkey Creek,but the proposed <br /> mining will occur above the elevation of the creek, and thus, above the water table. <br /> Please provide a cross-section oriented roughly perpendicular to the Little Turkey Creek <br /> fault zone,which shows the approximate elevation of the water table in this drainage. <br /> Response: Cross sections showing the water table will be included in Exhibit C. <br /> These figures will be included in a revised permit submittal provided to CDRMS on <br /> or prior to July 22,2016. <br /> 169) Comment: The text states that mining below the elevation of Deadman Creek will <br /> likely be above the water table in this drainage. Please explain how the operation will <br /> proceed if the water table in this drainage is encountered during mining. Additionally, <br /> what impact might this have on local wells, if any? <br /> Response: The North Pit Extension has been revised so that it no longer extends <br /> below the Deadman Creek elevation. Deadman Creek is an ephemeral creek,and <br /> this suggests that the water table is below this elevation. Several boreholes were <br /> drilled in this area,and no significant sources of water were identified. Drilling <br /> mud was continuously lost with no fluid return while drilling in this area.' This <br /> suggests that seepage,if encountered,will be limited. There are no wells along <br /> Deadman Creek that are west of the fault. Bishop-Brogden Associates demonstrates <br /> that the fault restricts groundwater flows perpendicular to the fault in their <br /> response to comments memorandum included in Exhibit G. <br /> 170) Comment: In this attachment, BBA Water Consultants(BBA)recommends the <br /> installation of two monitoring wells before mining begins,to quantify and confirm that <br /> groundwater level changes are not occurring in water supply wells west and east of the <br /> proposed mine. They recommend the wells be constructed in the granitic material to <br /> depths below the elevation of the bottom of the proposed quarry and such that they <br /> Hitch Rack Ranch Quarry (M-2016-010) <br /> Response to Comments—July 14, 2016 <br />